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package com.sun.enterprise.naming.util;

import com.sun.enterprise.naming.spi.NamingObjectFactory;
import com.sun.enterprise.naming.spi.NamingUtils;
import org.glassfish.logging.annotation.LogMessageInfo;
import org.jvnet.hk2.annotations.Service;

import jakarta.inject.Singleton;
import javax.naming.Context;
import java.io.*;
import java.security.AccessController;
import java.security.PrivilegedExceptionAction;
import java.util.logging.Level;

import static com.sun.enterprise.naming.util.LogFacade.logger;
import static org.glassfish.common.util.ObjectInputOutputStreamFactoryFactory.getFactory;

/**
 * This is a utils class for refactoring the following method.
 */
// XXX: Could this be merged with its inferface, and turned ito a bunch of static methods?
@Service
@Singleton
public class NamingUtilsImpl implements NamingUtils {
    @LogMessageInfo(message = "Exception in NamingManagerImpl copyMutableObject(): {0}",
    cause = "Problem with serialising or deserialising of the object",
    action = "Check the class hierarchy to see if all the classes are Serializable.")
    public static final String EXCEPTION_COPY_MUTABLE = "AS-NAMING-00006";

    @Override
    public NamingObjectFactory createSimpleNamingObjectFactory(String name,
        Object value) {
        return new SimpleNamingObjectFactory(name, value);
    }

    @Override
    public NamingObjectFactory createLazyNamingObjectFactory(String name,
        String jndiName, boolean cacheResult) {
        return new JndiNamingObjectFactory(name, jndiName, cacheResult);
    }

    @Override
    public NamingObjectFactory createLazyInitializationNamingObjectFactory(String name, String jndiName,
            boolean cacheResult){
        return new JndiInitializationNamingObjectFactory(name, jndiName, cacheResult);
    }

    @Override
    public NamingObjectFactory createCloningNamingObjectFactory(String name,
        Object value) {
        return new CloningNamingObjectFactory(name, value);
    }

    @Override
    public NamingObjectFactory createCloningNamingObjectFactory(String name,
        NamingObjectFactory delegate) {
        return new CloningNamingObjectFactory(name, delegate);
    }

    @Override
    public NamingObjectFactory createDelegatingNamingObjectFactory(String name,
        NamingObjectFactory delegate, boolean cacheResult) {
        return new DelegatingNamingObjectFactory(name, delegate, cacheResult);
    }

    @Override
    public Object makeCopyOfObject(Object obj) {
        if ( !(obj instanceof Context) && (obj instanceof Serializable) ) {
            if(logger.isLoggable(Level.FINE)) {
                logger.log(Level.FINE, "** makeCopyOfObject:: " + obj);
            }
            try {
                // first serialize the object
                byte[] data = serialize(obj);
                // now deserialize it
                return deserialize(data);
            } catch (Exception ex) {
                logger.log(Level.SEVERE, EXCEPTION_COPY_MUTABLE, ex);
                throw new RuntimeException("Cant copy Serializable object:", ex);
            }
        } else {
            // XXX no copy ?
            return obj;
        }
    }

    private Object deserialize(byte[] data) throws IOException, java.security.PrivilegedActionException {
        try (final ObjectInputStream ois =
                getFactory().createObjectInputStream(new ByteArrayInputStream(data))){
            return AccessController.doPrivileged((PrivilegedExceptionAction) () -> ois.readObject());
        }
    }

    private byte[] serialize(Object obj) throws IOException {
        try (final ByteArrayOutputStream bos = new ByteArrayOutputStream()) {
           try (final ObjectOutputStream oos = getFactory().createObjectOutputStream(bos)) {
               oos.writeObject(obj);
           }
           return bos.toByteArray();
        }
    }
}
